Roblox

Roblox is a uniquely scalable title, and the benchmark data for the AMD Ryzen 9 9900X paired with the AMD Radeon RX 6600 shows a configuration that is heavily biased toward CPU performance at lower resolutions, with the GPU becoming the primary constraint as resolution increases. The measured results reveal a system capable of delivering extremely high frame rates, though the experience varies significantly depending on the chosen settings and target resolution.

Settings Recommendations

The data indicates that the Medium preset offers the most balanced experience across all tested resolutions, providing a significant performance uplift over High settings while maintaining respectable frame pacing. At 1920x1080, Medium delivers an average of 256 FPS, which is 30 FPS higher than High (226 FPS) and only 25 FPS lower than the Low preset's 281 FPS. Crucially, Medium is the only preset at 1080p that includes a measured minimum FPS of 218 and a maximum of 294, suggesting that the frame time variance is well-controlled despite the high average. The jump from Medium to High costs 30 FPS, while the jump from High to Ultra costs another 42 FPS, making Ultra a demanding choice that yields 184 FPS.

At 2560x1440, the same pattern holds. The Medium preset delivers an average of 171 FPS with a minimum of 145 FPS, which is substantially smoother than the High preset's 151 FPS average and the Ultra preset's 123 FPS. The Low preset reaches 188 FPS, but the gap between Low and Medium is only 17 FPS, while the gap between Medium and High is 20 FPS. Considering the visual quality trade-offs, Medium provides the best combination of fluidity and fidelity at this resolution.

At 3840x2160, the situation changes. The Medium preset averages 97 FPS with a minimum of 82 FPS, which is the only 4K preset with measured frame time data. High drops to 85 FPS, and Ultra falls to 69 FPS. While Low reaches 106 FPS, the Medium setting's 97 FPS average is closer to the 60 FPS refresh rate threshold and offers a more visually complete experience. For users with high-refresh-rate 4K displays, the Low preset at 106 FPS is the only way to approach triple-digit frame rates, but the Medium preset remains the recommended choice for a playable and visually coherent experience.

GPU Role

The AMD Radeon RX 6600 is built on the RDNA 2.0 architecture with a Navi 23 chip, featuring 8 GB of GDDR6 memory on a 128-bit bus, providing 224.0 GB/s of bandwidth. The GPU's boost clock is rated at 2491 MHz, with a game clock of 2044 MHz and a base clock of 1626 MHz. The card's 64 ROPs and 112 TMUs contribute to a pixel rate of 159.4 GPixel/s and a texture rate of 279.0 GTexel/s, which are the specifications that directly influence fill-rate-bound scenarios.

In Roblox, the GPU's role becomes increasingly apparent as resolution scales. The data shows that moving from 1080p to 1440p reduces the average FPS by roughly 25% across all settings, while moving from 1440p to 4K reduces it by another 40-45%. This steep decline is characteristic of a GPU that is being saturated by the pixel workload. The RX 6600's 8 GB VRAM is sufficient for Roblox's asset sizes at these settings, as evidenced by the fact that the frame rate scales consistently with resolution rather than encountering a memory capacity cliff. The benchmark results indicate that the GPU is the limiting factor at 4K, where even the Low preset cannot break past 106 FPS, while at 1080p, the CPU has ample headroom to push the GPU to its limits.

Resolution Scaling

The measured FPS data reveals a clear and consistent pattern of performance degradation as resolution increases, which is typical for a mid-range GPU paired with a high-end CPU. At 1080p with Medium settings, the average is 256 FPS. Moving to 1440p drops this to 171 FPS, a 33% reduction. Moving from 1440p to 4K drops it further to 97 FPS, a 43% reduction from the 1440p figure and a 62% reduction from the 1080p figure.

This scaling behavior indicates that at 1080p, the system is heavily CPU-bound, as the Ryzen 9 9900X's 12 cores and 24 threads are capable of feeding the RX 6600 more than enough draw calls and physics updates to maintain extremely high frame rates. The GPU is the bottleneck at 4K, where the pixel fill rate and shading capacity of the RX 6600 are strained. The fact that the Low preset at 4K (106 FPS) is only slightly faster than the Medium preset at 4K (97 FPS) suggests that the GPU is the limiting factor, as reducing the render workload has a diminishing impact once the GPU is saturated. Conversely, at 1080p, the Low preset (281 FPS) is significantly faster than the Medium preset (256 FPS), indicating that the CPU still has headroom to exploit the reduced GPU load.

How This Combo Ranks

The AMD Ryzen 9 9900X and AMD Radeon RX 6600 combination ranks 2863 out of 3711 tested combos in Roblox, placing it in the lower-middle portion of the database. This ranking is somewhat surprising given the high frame rates observed, but it reflects the fact that Roblox is a highly CPU-efficient title where many more powerful GPUs paired with similar CPUs can achieve higher scores. The combo's percentile position suggests that the RX 6600 is the limiting factor in the pairing, as the Ryzen 9 9900X is a top-tier processor with an average benchmark score of 57498, placing it in the 92nd percentile of all CPUs.

The CPU's nearest rivals include the AMD EPYC 9015, which scores 57555 (a 0.1% difference), and the Intel Core i9-14900, which scores 58115 (a 1.1% difference). These margins are negligible, indicating that the Ryzen 9 9900X is performing as expected. The GPU, however, sits in the 63rd percentile with an average benchmark score of 19036, and its nearest rivals include the NVIDIA Quadro K6000 (19030, 0% difference) and the NVIDIA GeForce RTX 4050 Mobile (19049, -0.1% difference). This parity with mobile and older workstation parts explains the combo's lower ranking in a game that scales well with GPU compute.

CPU Role

The AMD Ryzen 9 9900X is a 12-core, 24-thread processor based on the Zen 5 architecture (Granite Ridge), manufactured on a 4 nm process at TSMC. It features a base clock of 4.40 GHz and a boost clock of 5.60 GHz, with a 64 MB L3 cache and 1 MB L2 per core. The CPU supports DDR5 memory with a dual-channel bus and delivers 89.6 GB/s of memory bandwidth. In synthetic benchmarks, it scores 32172 in Cinebench R23 multi-core and 2253 in single-core, and 22174 in Geekbench multi-core.

In Roblox, the CPU's high single-thread performance and substantial multi-thread capacity ensure that the game's main thread and physics simulation never become a bottleneck at higher resolutions. The data shows that at 1080p, the frame rate scales almost linearly with GPU load, indicating that the CPU is not limiting. Even at the Low preset with 281 FPS, the CPU is capable of maintaining frame pacing that exceeds the GPU's output capability. The CPU's 92nd percentile ranking among all processors further underscores its capability, and its nearest rival, the Intel Core i9-14900, is only 1.1% faster in average benchmark score, a difference that would not be perceptible in Roblox's frame rate. The CPU's 5.60 GHz boost clock is particularly beneficial for Roblox's logic-heavy single-threaded segments, ensuring that frame times remain consistent even in complex scenes.

Measured FPS Breakdown

At 1920x1080, the system delivers its highest frame rates. The Low preset averages 281 FPS, which is the fastest result in the entire dataset. The Medium preset averages 256 FPS with a minimum of 218 FPS and a maximum of 294 FPS, providing a wide and stable frame rate window. The High preset averages 226 FPS, and the Ultra preset averages 184 FPS. The delta between Low and Ultra is 97 FPS, representing a 34% performance penalty for the highest visual quality settings.

At 2560x1440, the performance drops are consistent. The Low preset averages 188 FPS, the Medium preset averages 171 FPS with a minimum of 145 FPS and a maximum of 197 FPS, the High preset averages 151 FPS, and the Ultra preset averages 123 FPS. The gap between Low and Ultra is 65 FPS, a 35% reduction, mirroring the 1080p scaling.

At 3840x2160, the frame rates compress significantly. The Low preset averages 106 FPS, the Medium preset averages 97 FPS with a minimum of 82 FPS and a maximum of 111 FPS, the High preset averages 85 FPS, and the Ultra preset averages 69 FPS. The gap between Low and Ultra is 37 FPS, a 35% reduction, but the absolute values are much lower. The Medium preset's minimum of 82 FPS indicates that the GPU is struggling to maintain high frame rates under load, and the Ultra preset's 69 FPS average is the only result below 70 FPS in the entire dataset. The data clearly shows that the RX 6600 is the limiting component at 4K, while the Ryzen 9 9900X ensures that the CPU side never undermines the experience at any resolution or setting.